Corner extrusion for a building structure



FIG. 1 is a perspective view of a corner extrusion to which the design is applied and looking down from the left;

FIG. 2 is a top plan view of the corner extrusion;

FIG. 3 is an elevational view of the front of the corner extrusion;

FIG. 4 is an elevational view of the right side of the corner extrusion;

FIG. 5 is an elevational view of the rear of the corner extrusion; and,

FIG. 6 is an elevational view of the left side of the corner extrusion.

It is understood that the corner extrusion for a building structure shown is of indeterminate length. 

The ornamental design for a corner extrusion for a building structure, as shown and described. 